The National Oceanic and Atmospheric Administration (NOAA) explains that a polar vortex is a large area of low pressure and cold air currents which circulate around both of the Earth’s poles. It has a circular shape and is at it’s peak during the winter months.

What is the polar vortex? The polar vortex is a large area of low pressure, cold air around the Earth's poles that blows westward during the winter

The polar vortex that has dealt the most brutal winter to much of the US in recent years is about to be broken down – but not before unleashing a late-season cold and the biggest yet. A stratospheric warming event has begun,

A polar vortex collapse is set to unleash harsh winter-like conditions across North America. A polar vortex is a large atmospheric region characterised by low pressure and cold air around either of the Earth's two geographical poles.

The Met Office has declared it is "almost certain" that a sudden stratospheric warming will hit Britain in mid-March, potentially bringing a cold snap to the UK. A spokesman for the meteorological service told GB News: "The stratosphere polar vortex is now weakening rapidly.

Impact on North America's weather in March - An in-depth look at the forecasted polar vortex collapse and its potential effects on weather patterns across North America this March

After Feb dumped a wave of unconditionally severe winter weather in the US, March is about to unleash those conditions again due to the polar vortex collapse.

A polar vortex collapse is poised to unleash severe winter weather across the US, Canada, and potentially the UK, causing travel chaos and freezing temperatures. Experts warn of significant disruptions as Arctic air spills southward,